28 Jul
2016
28 Jul
'16
8:18 a.m.
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http://cgit.osmocom.org/osmo-bts/commit/?id=dab54b91783d5197e0129de950a705e…
commit dab54b91783d5197e0129de950a705e2da2a4cb9
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Fri Jul 1 00:10:31 2016 -0700
trx: Enable EGPRS handling through burst lengths
Existing interfaces are coded with the implicit expectation of using
a burst sequence length of 148, which is constant with GSM and GPRS.
That changes with EGPRS, where the burst length may be 444 due to
the use of 8-PSK instead of GMSK modulation.
Setup the interface to accept and return a length value with the
burst sequence. This allows 444 length bit vectors to/from the
EGPRS decoder/encoder. Length is explicitly used as a identifier for
8-PSK vs. GMSK modulated sequences.
Change-Id: I90b46b46b11b6ce280e7f8232d5a2fccec2d4f18
Signed-off-by: Tom Tsou <tom.tsou(a)ettus.com>
http://cgit.osmocom.org/osmo-bts/commit/?id=9407e644b0246fadec74a45faeedb57…
commit 9407e644b0246fadec74a45faeedb570a0c04c6b
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Wed Jul 6 13:29:55 2016 -0700
trx: Add EGPRS coding and decoding procedures
Handles uplink decoding and downlink encoding procedures for MCS 1-9.
Includes Type 1, 2, and 3 headers and tables from 3GPP TS 44.060 in
order to independently recover coding and puncturing scheme (CPS)
parameters for each coded message.
Change-Id: I0f059ae34c6f36179553cbc972f8becf8179eb55
Signed-off-by: Tom Tsou <tom.tsou(a)ettus.com>
-----------------------------------------------------------------------
Summary of changes:
include/osmo-bts/scheduler.h | 12 +-
include/osmo-bts/scheduler_backend.h | 43 +-
src/common/scheduler.c | 26 +-
src/osmo-bts-trx/gsm0503_coding.c | 1016 +++++++++++++++++++++++++++++++++-
src/osmo-bts-trx/gsm0503_coding.h | 22 +
src/osmo-bts-trx/scheduler_trx.c | 159 ++++--
src/osmo-bts-trx/trx_if.c | 31 +-
src/osmo-bts-trx/trx_if.h | 2 +-
8 files changed, 1210 insertions(+), 101 deletions(-)
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Osmocom BTS-side code (Abis, scheduling, ...)